spelling

minute change to test pull requests

gui/list.html

@@ -1790,7 +1790,7 @@
 	</p>
 	<p class=func><span class=keyword>micGain</span>(dB);</p>
 	<p class=desc>When using the microphone input, set the amplifier gain.
-		The input number is in decibells, from 0 to 63.
+		The input number is in decibels, from 0 to 63.
 	</p>
 
 	<h3>Signal Adjustment</h3>